dlls/strmbase/dispatch.c

   1 /*
   2  * Generic Implementation of IDispatch for strmbase classes
   3  *
   4  * Copyright 2012 Aric Stewart, CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define COBJMACROS
  22
  23 #include "dshow.h"
  24 #include "wine/debug.h"
  25 #include "wine/unicode.h"
  26 #include "wine/strmbase.h"
  27 #include "uuids.h"
  28 #include "vfwmsgs.h"
  29 #include <assert.h>
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
  32
  33 HRESULT WINAPI BaseDispatch_Init(BaseDispatch *This, REFIID riid)
  34 {
  35     HRESULT hr = E_FAIL;
  36     ITypeLib *pTypeLib;
  37
  38     This->pTypeInfo = NULL;
  39     hr = LoadRegTypeLib(&LIBID_QuartzTypeLib, 1, 0, LOCALE_SYSTEM_DEFAULT, &pTypeLib);
  40     if (SUCCEEDED(hr))
  41     {
  42         hr = ITypeLib_GetTypeInfoOfGuid(pTypeLib, riid, &This->pTypeInfo);
  43
  44     if (pTypeLib)
  45         ITypeLib_Release(pTypeLib);
  46     }
  47     return hr;
  48 }
  49
  50 HRESULT WINAPI BaseDispatch_Destroy(BaseDispatch *This)
  51 {
  52     if (This->pTypeInfo)
  53         ITypeInfo_Release(This->pTypeInfo);
  54     return S_OK;
  55 }
  56
  57 HRESULT WINAPI BaseDispatchImpl_GetIDsOfNames(BaseDispatch *This, REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid, DISPID *rgdispid)
  58 {
  59     if (This->pTypeInfo)
  60         return ITypeInfo_GetIDsOfNames(This->pTypeInfo, rgszNames, cNames, rgdispid);
  61     return E_NOTIMPL;
  62 }
  63
  64 HRESULT WINAPI BaseDispatchImpl_GetTypeInfo(BaseDispatch *This, REFIID riid, UINT itinfo, LCID lcid, ITypeInfo **pptinfo)
  65 {
  66     if (This->pTypeInfo)
  67     {
  68         ITypeInfo_AddRef(This->pTypeInfo);
  69         *pptinfo = This->pTypeInfo;
  70         return S_OK;
  71     }
  72     return E_NOTIMPL;
  73 }
  74
  75 HRESULT WINAPI BaseDispatchImpl_GetTypeInfoCount(BaseDispatch *This, UINT *pctinfo)
  76 {
  77     if (This->pTypeInfo)
  78         *pctinfo = 1;
  79     else
  80         *pctinfo = 0;
  81     return S_OK;
  82 }